Wood heel machine



E. J. STORY 2,080,638

WOOD HEEL MACHINE Filed June 5, 1954 4 Sheets-Sheet l May i8, 1937.

May 18, 1937. E. J. STORY WOOD HEEL MACHINE 4 sheets-sheet 2 Filed June5, 1934 /NvfNroR ERNST J. STORY.

V- Y Afro/Mfrs Nw Q S May 18, 1937.. E. J. STORY '2,080,638

WOOD HEEL MACHINE Filed June 5, 1954 I 4 Sh'eeLs-Sheel 3 Y May 18, 1937.

E. J. STORY WOOD HEEL MACHINE uFiled June 5, 1954 4 sheets-sheet 4MNE/v70@ ffm/sr J. sra/Py.

ATTORNEYS Patented May 18, 1937 PATENT OFFICE WOOD HEEL MACHINE Ernst J.Story, Cincinnati, Ohio, assignor of onehalf to John M. Delaney,Cincinnati, Ohio Application June 5, 1934, Serial No. 729,108

22 Claims.

This invention relates to machinery for forming wood heels, andespecially for forming slots in such heels; particularly, arcuate slots.

One object of my invention is to provide a machine for forming slots inwood heels, these slots serving for the reception of the leather withwhich such heels are covered and also for more securely anchoring theheel to the shoe.

Another object is to provide a machine for forming arcuate slots at thebase of the heel on its forward face, these slots being formedautomatically.

Another object is to provide a machine having automatic feedingmechanism for feeding the heel toward the cutting tool.

Another object is to provide such a machine having a self-centeringchuck with means for adapting itself to slight variations in heels.

Another object is to provide a machine with such a chuck havingadjustments for various sizes and lengths of heels.

Another object is to provide a machine with such a chuck wherein thechuck arms are automatically tightened upon the work-piece when thechuck and the Work-piece are fed toward the cutting tool.

Another object is to provide a machine for forming wood heels whereinthe cutting stroke of the work-piece relative to the cutting tool ispower-operated and adjustable as regards its limits of feeding motion.

Another object is to provide such a machine having a multiplicity ofcutting tools which are simultaneously adjustable relative to oneanother 35' and which can be simultaneously clamped in adjustedposition.

Another object is to provide a vmethod of machining shoe heels, whichincludes gripping the heel while feeding it toward the machining tooland releasing it while moving it away from the machining tool; andfurthermore causing the motion of the heel-holder to operate thegripping and releasing action.

In the drawings:

Figure 1 is a front elevation of a wood heel with a slot formed by themachine of my invention;

Figure 2 is a central vertical section through the heel shown in Figure1, along the line 2-2 thereof;

Figure 3 is a side elevation of the machine of my invention;

Figure 4 is a top plan view of my machine;

, Figure 5 is a perspective View, in somewhat 55 diagrammatic form, ofthe moving elements in the chuck and feeding mechanism of my machine,supporting parts being omitted for clarity;

Figure 6 is a side elevation, partly in section,` of the machine shownin Figure 3, taken along the line 5 5 of Figure 4;

Figure 7 is a cross section through the chuck mechanism, taken alongtheline l-1 of Figure 6;

Figure 8 is a perspective view of the front face of the cutting tool andcutting head;

Figure 9 is a perspective view of the rear face of the cutting head;

Figure 10 is a fragmentary side elevation, partly in section, showingthe clamping mechanism for locking the cutting tools in their adjustedposition.

General arrangement Referring to the drawings in detail, Figure 1 showsa wood heel l, having a vertical portion 2 with a front face 3. At thebase of the front face 3 is an arcuate slot 4 extending forwardly, fromwhich is an arcuately-formed tongue 5. The horizontal surface 6 of theheel is curved in slightly concave form in order to t the shoe to whichit is attached.

The purpose of the extension tongue 5 is to assist the anchoring of theheel to the shoe, and also to serve in providing a smooth joint betweenthe leather sole and the heel. 'Ihe end of the thin piece of leathercovering the sole and forming a means of concealing the shoe structurebeneath it is pushed into the slot 4. In this manner a tight andnon-Wrinkling connection is made, and the leather strip firmly joined tothe heel without puckering or sagging. The extension tongue 5 isprovided with an arcuately-curved upper surface l.

The machine of my invention for forming the slots 4 in the wood heels,as above described, consists of a base I0 mounted upon legs II and I2.The leg I2 is associated with a gear box I3 containing the variousreduction gearing and changespeed gearing suitable for providing thenecessary speeds for the various operating parts of the machine. Poweris communicated to the gear box I3 from the drive shaft I4, on which ismounted a drive pulley I5. Alsomounted upon the main drive shaft I4 is asecond pulley I6 which communicates power to a pulley Il on the cuttershaft I3 through the agency of a belt I9. The cutter shaft I 8 isrotatably mounted in bearing brackets 2i) mounted upon the base I0.

A Cutter head construction Attached to the forward end of the cuttershaft I8 is the cutter head, generally designated 2|, by which thevarious cutting tools are held and caused to operate upon the workpieces.

The cutting head 2| (Figures 8 and 9) consists of a disk-like member 22having angularlygrooved slots 23 arranged in a cruciform manner andextending radially to the center of the disk 22. Along one side of eachslot is a movable gib 24, which serves as a clamping member. Attached toeach movable gib 24, as by the threaded connections 25 (Figure 10) is apair of rods 26, passing through the bores 21 in the cutting head disk22. The opposite ends of the rods 26 are attached to a crosshead 28, asby the threaded connection 29. In the middle of each crosshead 28 is acontact member 39, mounted on the stud 3| and held in place by the nut32.

On the back face of the cutter head 2| (Figure 9) is an annular slot 33,in which a cam ring 34 is partially rotatable. The cam ring 34 isprovided with wedge portions 35 adapted to engage the contact members 30(Figure 10), when the ring 34 is turned.

The ring 34 is provided with teeth 36 for the rotation thereof. Thecutter disk 22 is likewise provided with a socket 31, in which a toothedkey may be inserted, the teeth on this key engaging the teeth 36 on thering 34. Thus when the key is turned, the ring 34 moves, causing theWedge portions 35 to exert a clamp-ing or unclamping action against thecontact members 30. In this manner the movable gibs 24 are caused toexert a clamping or unclamping action, as may be desired.

Arranged to reciprocate in the grooved Ways 23 are tool posts 38 (Figure8), having correspondingly beveled base portions 39, adapted to fit thegrooved ways 23 and the beveled gibs 24. tool post 38 is provided with aclamping plate 40, which is provided with a groove 4|, adapted toreceive a cutting tool 42. The clamping plate 40 is secured to the toolpost 38 by means of the clamp screws 43 (Figure 8).

Attached to each tool post 38 is a rack bar 44 having teeth 45therealong. Each of these rack bars 44 is directed toward the center ofthe cutter head 2|, and its teeth 45mesh with the teeth. of a gear 46which is rotatably supported in the cutter head disk 22. The gear 46 maybe rotated by means of the nut-like portion 41 forming its 1 hub, thisrotation being accomplished by the use of any suitable wrench. Thecutter head 2| is provided with a boss 48 having a bore 49 for thepurpose of receiving the cutter shaft I8. To this boss 48 is pinned thegear shaft 8, on which they gear 46 is mounted and held in place'by thenut 9.

Accordingly, the cutting tools 42 may be adjusted relative to the cutterhead disk 22 by loosening the clamping screws 43, thus placing thecutting edges of all the cutting tools 42 in such a position that theywill engage the Workpiece and take substantially the same cut. Thecutting too-ls 42 may be moved radially in or out by releasing theclamping ring 34 by the toothed key previously mentioned, and applying awrench rotation of the cutting head 2|.

The

causes the gibs 24 to clamp the beveled portions 39 of the tool posts 38firmly in the grooved Ways 23.

Work-feeding mechanism The power connection for feeding the workrelative to the cutter head 2| and cutting tools 42 is received from theshaft (Figures 3 and 6), which emerges from the change-speed gear boxI3. Secured to the shaft 50, as by the key 5| working in the key-way 52,is a movable clutch collar 53. The latter is slidable to and fro alongthe shaft 58, this being governed by a clutch shipping ring 54, engagingan annular slot 55 in the clutch collar 53. The shipping ring 54 isengaged by a yoke 56 on the end of the clutch shipping lever 51, whichis pivotally mounted on the stub shaft 58 supported in the bracket 59attached to the machine leg I I.

The movable clutch collar 53 is provided with toothed portions 63, whichengage corresponding slots 6I (Figure 3) in the opposite face of a fixedcollar 62. The latter is drivingly attached to the shaft 63, as by theset screw 64, in the threaded hole 65. The shaft 63 is rotatablysupported by the bearing sleeve 66 in the machine leg I I, on theopposite side or" which is mounted a bevel gear 61, as by the pin 68.The free end of the shaft 63 is provided with a pin 68a, which may beengaged by a hand crank so that the connected mechanism may be rotated,if desired, by hand as well as by machine.

Meshing with the bevel gear 61 is a second bevel gear 69 secured to thesleeve 16, as by the set screw 1I. The sleeve 19 isrotatablysupported inthe bearing sleeve 12, and held in position by the Collar 14 on theOpposite side thereof. The bearing sleeve 12 is mounted in theprojecting arm 15 of the machine leg II.

The sleeve 19 serves to drive a sliding shaft 16,

having a slot 11, serving as a key-way and engaged by the key 18 securedtothe sleeve 10. The sliding shaft 16 is mounted in the bearing sleeve19 of the vertically movable housing 86 forming a support. The latter isprovided with cylindrical side walls 8| movable vertically within a bore82 in the machine base I0 (Figure 6) and clamped in any position bymeans of the cam 83 on the locking lever 84, mounted upon the pin 85passing through the yoke portions 86 of the base I0. (Figure 3).

The movable housing 80 is provided with a rack 81,V which is engaged bythe toothed pinion 88 mounted upon the shaft 89 and turned by the handwheel 9B, secured thereto. (Figure 3). 'Ihus by releasing the lockinglever 84 and turning the hand Wheel 98, the movable housing 80 may bemoved up or down into any suitable position, and there clamped byshifting the locking lever 84 into its clamping position.

On the lower side of the bearing sleeve 19 is mounted a collar 9|secured to the shaft 16. On the upper end of the shaft 16 (Figure 6) ismounted a cam-head 92, as by the key 93. The cam head 92 is providedwith a cam groove 94 in its upper surface, arranged eccentrically to theaxis of rotation of the shaft 16. Accordingly, when the clutch shippingarm 51 is moved so as to cause the clutch collars 53 and 62 to engage,and power is applied to the main driving pulley I5, the shaft 15 and itscam 92 will be rotated, causing the cam groove 94 to move eccentrically,and this Will cause a cam follower to reciprocate.

Work-holding mechanism Engaging the cam groove 94 (Figure 6) is a camfollower or roller 95 mounted upon the pin 96 threadedly secured to theslide member 91, as in the hole 93. The slide member 91 is provided withthe threaded bore 99 which is engaged by the threaded adjusting screw|99. The latter has enlarged heads |9| and |92 arranged on oppositesides of the arm |93, which is secured to the main carriage |94. Thehead |92 is so formed as to receive a wrench. The main carriage |94reciprocates in ways provided by the gibs |95 secured, as by the screws|96, to the movable housing 89. Consequently, when the adjusting screw|99 is turned, the main carriage |94 is caused to reciprocate relativeto the movable housing B9, and thus caused to change its positionrelative to the axis of the shaft 16.

Chuck for holding work The chuck mechanism for holding the wood heels,while they are being slotted, is mounted in grooved ways |91 andsupported mutually by the slide blocks |08 and |99, having the ridges||9 and respectively engaging the grooved ways |91. The slide block |99is provided with a threaded socket ||2, in which is secured a pin ||3.Pivotally mounted upon the pin H3 is a triangular yoke piece ||4 havingslots ||5, in which pins ||6 and l |1 are movable. The latter aresecured in threaded sockets in the ends of the chuck-operating levers||8 and ||9, these being pivotably mounted near their midpoints on thepivot screws |29 and |2I, threaded into sockets in the main carriage|94. A coil spring |22 secured at one end to the pin |23 mounted on theyoke piece I4, and at the other end to the bracket |24 mounted on themain carriage 94, serves to urge the yoke piece backward. The outer endsof the chuck-operating levers ||9 and ||9 are provided with rollers |25,mounted upon pins |26, these rollers engaging the inner faces of a pairof tracks |21 and |28, mounted upon the gibs |95, as by the screws |29.In Figure 4 the spring |22 is omitted for clarity.

'Ihe slide blocks |99 and |99 serve to actuate the chuck mechanismproper. The slide block |99 contains the threaded bore |39, throughwhich passes the adjusting screws |3|, this adjusting screw beingprovided for tightening or loosening the chuck so as to adapt it todifferent sizes of heels. One end of the screw |3| is provided with ahead |32, adapted to receive a wrench, whereas the other end passesthrough a bore |33 in the slide block |99, and engages one end of a coilspring |34, the opposite end of which is seated around the stud |35 andagainst the slide block |98. Accordingly, when the adjustment screw |3|is turned, the slide blocks 99 and |99 are caused to move toward or awayfrom each other, thus adjusting the chuck mechanism for different sizesof heels, as will appear later.

Passing through the forward end of the slide block |98 is a pin |36,which serves as the pivotconnection for a pair of links |31, these beingpivotally attached at their opposite ends to the rear clamp arm |38 bythe pin |39, forming trunnions therein. The rear clamp arm |33 isattached to the cross shaft |49, the latter being A journaled in thetiltable bracket |4|. The cross shaft |49 at its outer ends is providedwith bevel pinions |42, which mesh with similar bevel pinions |43mounted on the shafts |44, whose axes are at right angles to the crossshaft 49. The shafts |44 are likewise journaled in bearings in thetiltable bracket |4|. On the ends of the shafts |44 are mounted thechuck side fingers |45, having the contact faces |46 and |41.

rI'he rear clamp arm |38 has a hollow bore |48 at its outer end, thisbeing adapted tol receive a plunger |43 guided therein by the pin |59,engaging the groove |5| in the plunger |49. The outer end of the plunger|49 carries the rear chuck finger |52. The latter is provided with thecontact roller |53 mounted upon the pin |54.

The plunger |49 is resiliently mounted in the bore |43 by means of thecoil spring |55 seated in the bore |49, and adjustable by the nut |56engaging the threaded shank |51 of the plunger |49. Accordingly, therear chuck fin-ger |52 is thus self-adjusting relative to the side chuckarms |45, when different lengths of heels are placed in the machine. Thetiltable bracket |4| is provided with a table portion |58, which servesas a bottom rest for the heels placed in the machine.

The tiltable bracket |4| is mounted upon trunnions |59, which pivotallyengage the bores '|69 in the side arms |6| of the main carriage |94(Figures 3 and 7). The latter contain the arcuate slots |62, havingtheir centers lying on the axis of the trunnions |59. Clamping screws|63 pass through the holes |64 in the tiltable bracket |4| and likewisethrough the arcuate slots |62, being secured thereto by the wing nuts|65. Accordingly, when the wing nuts |65 are loosened, the tiltablebracket |4| may be angularly tilted around its trunnions |59 to thedesired position. The wing nuts 65 are then tightened, thus locking thetiltable bracket i4| in its angled position.

The forward upper ends of the tilting bracket |4| are provided withtrunnions |66, which serve as pivotal supports for the arms |61. Thelatter are joined by the front support bar |68, which passes across thespace between them. The support bar |63 is carried by the members |69,which in turn are held in place by the screws |19 havin the heads |1|.

Operation l Before the machine is started, a heel of the type tc beslotted is placed upside down in the chuck, as shown by the dotted lines|12 in Figure 6, and resting upon the member |58 of the tiltable bracketi4 The cutting tools 42 of the cutting head 2| are then adjusted in orout in the manner previously described, so that they will engage theheel at the proper point. The chuck itself is adjusted bymeans of thescrew |32 for the particular size of the heel |12.

Due to the construction of the cam mechanism, the forward motion of themain carriage |94 causes the clamping figures |45 and |52 to clamp theheel, whereas its backward motion causes the heel to be released. Theextent of this motion can be adjusted to the particular heel byattaching a hand crank to the shaft 63 (Figure 6) in such a position asto engage the pin 69. By turning this hand crank, the cam 92 may becaused to revolve and thus reciprocate the main carriage |94. Its limitsof reciprocation may then .be adjusted by turning the screw |99. As thecam 92 revolves and the main carriage |94 reciprocates relative to thegibs |95 (Figure 4) the rollers engage the tracks |21 and |23, movingthe ends of the chuck-operating levers ||8 and ||9. The opposite endsthereof move the pins ||6 and |1, imparting a reciprocating motion tothe slide block |99 by. its connection to thepin I3.

. 92 to revolve.

When the slide block |09 reciprocates, the slide block |08 alsoreciprocates, moving the links |31 and accordingly swinging the rearclamp arm |38 in an angular direction. This acti-on rotates the shaftand likewise the shafts |44, moving the side chuck fingers |45 toward oraway from one another while the rear chuck finger |52 is moving forwardor backward.

T'he position of the heel and, therefore, of the heel rest |58, up ordown relative to the cutting tools d2, may now be adjusted, if desired,by releasing the locking cam lever 84 and turning the hand wheel 8|)(Figure 3). Through the action of the pinion 88 and the rack 81, themovable housing 30 is raised or lowered to the desired position. Thelocking cam lever 84 is then moved to its clamping position and themachine is ready for operation.

In operation the machine is connected to a suitable source of power,such as to an electric motor, by a belt engaging the main drive pulleyI5. When this is rotated, the cutter shaft |8 and the countershaft arerotated through their respective mechanisms. If now the clutch ship pinglever 51 is so set as to connect the clutch, the shaft 63 revolves andthe bevel gears 51 and 89 likewise cause the vertical shaft 16 and itscam As the cam 82 revolves, its eccentric groove 84 causes the roller 95and its pin 96 to move backward and forward, reciproeating the maincarriage |84. As the latter moves forward, the side chuck fingers |45and the rear chuck finger |52 move into clamping engagement With theheel 12, holding it rmly while the rotating cutting tools 42 cut theslot 4 and the arcuate surface 1 upon the heel. As the main carriage |04moves backward after this cut has been made, the clutch fingersautomatically release themselves through the action of the ciutchoperating levers ||8 and ||9 against the tracks |21 and |28, and theheel may then be removed by the operator and another heel placed inposition. In this manner the heels may be rapidly and accuratelyslotted, and quickly adjusted to any change in size. Slight variationsin the dimensions of heels intended to be of the same size areautomatically taken care of by means of the spring |34, serving as theresilient connection between the sliding blocks |58 and |89.

It will be understood that I desire to comprehend within my inventionsuch modifications as may be necessary to adapt it to varying conditionsand uses.

Having thus fully described my invention, what Iclaim as new and desireto secure by Letters Patent is:

1. In combination in heel-machining apparatus, a reciprocable carriage,means for cutting away a portion of the heel, a stop for limiting thepositioning of the heel, a positioning member for urging the heel intoengagement with the stop, laterally disposed clamping members comprisingmeans for holding the heel mounted on said carriage, and means forsimultaneously operating the holding means and reciprocating saidcarriage relatively to said cutting means, said carriage having devicesoperated by the reciprocation of said carriage adapted to grip the heelduring the feeding stroke and to release the heel during the returnstroke.

2. In combination in heel-machining apparatus, a reciprocable carriage,means for cutting away a portion of the heel, a stop for limiting thepositioning of the heel, a positioning member yfor urging the heel intoengagement with the stop, laterally disposed clamping members comprisingmeans for holding the heel mounted on said carriage, means forsimultaneously operating the holding means and reciprocating saidcarriage relatively to said cutting means, yielding means associatedwith said holding means to yieldingly grip said heel for accommodatingvarying sizes of heels, and devices operated by the reciprocation ofsaid carriage for causing said positioning and clamping members to graspthe heel during the feeding stroke and to release the heel during thereturn stroke.

3. In combination in heel-machining apparatus, means for cutting away aportion of the heel, a stop for limiting the positioning of the heel, apositioning member for urging the heel into engagement with the stop,laterally disposed clamping members comprising means for holding theheel, and means for feeding said cutting means and holding meansrelative to each other and simultaneously operating the holding means,said holding means having devices adapted to adjust the position of saidheel angularly relatively to said cutting means.

4. A work-holding device for heel-machining apparatus comprising acarriage, means on the carriage for gripping the heel, and meansslidably mounted on the carriage and resiliently connected thereto foradjusting said gripping means angularly and linearly relatively to saidsupport.

5. A Work-holding device for heel-machining apparatus comprising asupport, a carriage on the support, means on the carriage for supportingand gripping the heel, said means comprising a table having thereongripping lingers, means for adjusting said gripping means to accommodatevarying sizes of heels, and means for moving said carriage relatively tosaid support Y to feed the heel to machining devices.

6. A Work-holding device for heel-machining apparatus comprising asupport, aY carriage thereon, a stop associated with said carriage forlimiting the positioning of the heel longitudinally, means for grippingthe heel on both sides laterally and for urging the heel against thestop, means for adjusting said gripping means to accommodate varyingsizes of heels, means for moving said carriage relatively to saidsupport to feed the heel to the machining devices, and means on thesupport to cause the gripping means to'grip the heel and urge it againstthe stop during the feeding motion and to release it during thereturning motion thereof.

7. A work-holding device for heel-machining apparatus comprising asupport, a carriage mounted on said support for reciprocation relativelythereto, means to move said carriage to and from machining devices, aforwardly-disposed stop associated with said carriage for limiting thepositioning of the heel, a rearwardly-disposed positioning memberarranged to urge the heel against the stop, laterally disposed clampingmembers to grip the heel on its lateral sides, and means arrangedbetween said carriage and said support and operated by the movement ofsaid carriage to operate said positioning and clamping members to clampthe heels against said stop during the feeding movement of saidcarriage.

8. A Work-holding device for heel-machining apparatus comprising asupport, a carriage mounted on said support for reciprocation relativelythereto, means to move said carriage to and from the machining devices,a stop between the heel and the machining devices, a positioning 75 tosimultaneously operate said positioning and clamping members to clampthe heels lagainst said stop during the feeding movement of saidcarriage and to release the heels from engagement with said stop duringthe return movevment thereof.

9. In combination in heel-machining appairatus, means for holding aheel, means for cutting an arcuate slot in said heel, and means forYfeeding said heel-holding means and said cutting means relatively toone another to cut said slot, said cutting means comprising a rotarydisc having cutting tools thereon and means for adjusting said cuttingtools on the disc, whereby to vary the curvature of said arcuate slot.

10. In combination in heel-machining apparatus, means for holding aheel, means for cutting an arcuate slot in said heel, and means forfeeding said heel-holding means and said cutting means relatively to oneanother to cut said slot, said cutting means comprising a rotary dischaving cutting tools thereon and means for adjusting said cutting toolssimultaneously, whereby to vary thecurvature of said arcuate slot.

11. In a cutter, a disc-like member having in one side a plurality ofradial slots, a tool post in each slot, clamp means in each slot toclamp the post therein, and a common means on the other side of saidmember to cause each clamp means to clamp its post.

12. In a cutter, a disc-like member having in one side radial slots, atool post in each slot, clamp means in each slot to clamp the posttherein, and a common cam member on the other side of the member tocause each clamp means to clamp its post.

13. In a cutter, a disc-like member having on one side clamp-operatingmembers and on its other side radial slots with clamping membersoperatively connected to said clamp-operating members through said disc,a tool post slidably mounted in each slot, a common means arranged toengage said clamp-operating members for operating said clamping memberssimultaneously to clamp said tool posts in unison, a shaft fixed to thecenter of the disc, and means on the shaft operatively connected to theposts for sliding them in the slots.

14. In a cutter, a disc-like member having on one side a plurality ofradially disposed slots, a tool post slidably mounted in each slot, aclamp member in each slot for clamping the post therein, a plurality ofcrossheads on the other side of said disc-like member, each crossheadbeing connected to a clamp member, and a single means acting on each ofthe crossheads to cause the clamp members to clamp the posts.

15. In a cutter, a disc-like member having on one side a plurality ofradially disposed slots, a tool post slidably mounted in each slot, aclamp member in each slot for clamping the post therein, a plurality ofcrossheads on the other side of the disc-like member, each crossheadbeing connected to a clamp member, and a ring having thereon wedgeportions to engage the crossheads to cause the clamp members to clampthe posts.

16. In a wooden heel machine, a cutting tool, a housing forming asupport, a cam head in the housing having an axis of rotation and a camgroove eccentric to the axis of rotation, a carthe carriagereciprocates.

riage slidably mounted on the housing relatively to said cutting tool, aslide member adjustably mounted on the carriage and having a pinprojecting into the cam groove, whereby a rotation of the head willreciprocate the carriage, and 1.5

heel-holding means on the carriage. I

1'7. In a wooden heel machine, a cutting tool, 'a

housing forming a support, a cam head in the housing having an axis ofrotation and a cam groove eccentric to the axis of rotation, a carriageP slidably mounted on the housing relatively to said cutting tool, aslide member adjustably mounted on the carriage and having a pinprojecting into the cam groove, whereby a rotation of the head willreciprocate the carriage, and heel-holdingfl'1'5 means on the carriage,said means comprising an adjustable table having thereon heel-clampingmeans and cooperating means on the carriage and the housingto operatethe clamping means whenA 18. In a wooden heel machine, a cutting tool, ahousing forming a support, a cam head in the housing having an axis ofrotation and a cam groove eccentric to the axis of rotation, a carriageslidably mounted on the housing relatively to said cutting tool, a slidemember adjustably mounted on the carriage and having a pin projectinginto the c am groove, whereby a rotation of the head will reciprocatethe carriage, and heel-holding means on the carriage, said meansComprising an adjustable table having thereon heel-clamping meanscomprising a resiliently supported rear chuck finger and a pair of chuckarms, and cooperating means on the carriage and the housing to operatethe clamping means when the carriage reciprocates.

19. In a wooden heel machine, a cutting tool, a. housing forming asupport, a cam head in the housing having an axis of rotation and a camgroove. eccentric to the axis of rotation, a carriage slidably mountedon the housing relatively to said cutting tool, a slide memberadjustably mounted on the carriage and having an instrumentality thereonprojecting into the cam groove, whereby a rotation of the head willreciprocate the carriage, a heel-supporting table adjustably mounted onthe carriage, heel-gripping meansv on the table, and cooperating meanson the table and the housing to operate the heel-gripping means as thecarriage reciprocates.

20. In a wooden heel machine, a cutting tool, a housing forming asupport, a cam head in the housing having an axis of rotation and a camgroove eccentric to the axis of rotation, a carriage slidably mounted onthe housing relatively to said cutting tool, a slide member adjustablymounted on the carriage and having an instrumentality thereon projectinginto the cam groove, whereby a rotation of the head will reciprocate thecarriage, a heel-supporting table adjustably mounted on the carriage,heel-gripping means on the table, and cooperating means on the table andthe housing to operate the heel-gripping means as the carriagereciprocates, said cooperating means comprising a block slidably mountedon the carriage and operatively connected to the gripping means, asecond block slidably mounted on the carriage and adjustably andresiliently connected to the first-named block, a spring connecting thesecond block to the carriage and a loose lever connection between thesecond block and the housing.

21. In a wooden heel machine, a cutting tool, a housing forming asupport having thereon a pair of tracks, a cam head in the housinghaving an axis of rotation and a cam groove eccentric to the axis ofrotation, a carriage slidabiy mounted on the housing between the tracksrelatively -to said cutting tool, a slide member adjustably mounted onthe carriage and having thereon an instrumentality projecting into thecam groove, whereby a rotation of the head will reciprocate thecarriage, a heel-supporting table adjustably mounted on the carriage,heel-gripping means on the table, and means on the carriage cooperatingWith the tracks to operate the gripping means as the carriagereciprocates.

22. In a Wooden heel machine, a cutting tool, a housing forming asupport having thereon a pair of tracks, a cam head in the housinghaving an axis of rotation and a cam groove eccentric to the axis ofrotation, a carriage siidably mounted Y on the housing between thetracks relatively to said cutting tool, a slide member adjustablymounted on the carriage and having thereon an instrumentality projectinginto the cam groove, whereby a rotation of the head will reciprocate thecarriage, a heel-supportingV table adjustably mounted onthe carriage,heel-gripping means on the table, and means on the carriage cooperatingwith the tracks to operate the gripping means as the carriagereciprocates, said means comprising a block slidable on the carriage andoperativel connected to the gripping means, a second vbloc siidablymounted on the carriage and adjustabl' and resiliently connected to thefirst-name block, a triangular yoke-piece on the second b lock,

said yoke-piece having therein a pair of arcuate l nslots, a springconnecting the yoke-piece to the ERNST J. STORY.

